Matt Lauer is out at NBC effective immediately.
NBC News Chief Andrew Lack sent a memo to staff overnight saying the network had received a complaint from a colleague about inappropriate sexual behavior in the workplace by the long-time "Today" Show co-host.
Savannah Guthrie, joined by Hoda Kotb, made the announcement this morning, choking up as she talked about her partner's firing.
In his memo, Lack noted that while this was the first complaint about Lauer, other evidence presented shows it may not have been an isolated incident.
The 59-year-old Lauer had hosted "Today" since 1998.